AD 71-05-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Sikorsky Aircraft Corporation | S-61A | Airworthiness Directives; Sikorsky Model S-61 Type Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-61D | Airworthiness Directives; Sikorsky Model S-61 Type Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-61E | Airworthiness Directives; Sikorsky Model S-61 Type Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-61L | Airworthiness Directives; Sikorsky Model S-61 Type Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-61N | Airworthiness Directives; Sikorsky Model S-61 Type Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-61NM | Airworthiness Directives; Sikorsky Model S-61 Type Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-61R | Airworthiness Directives; Sikorsky Model S-61 Type Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-61V | Airworthiness Directives; Sikorsky Model S-61 Type Helicopters |
Unsafe Condition
Failure of the S-61 Main Landing Gear Axle, P/N 6125-50115-0
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect and replace the axle in accordance with paragraph 2 of Sikorsky Service Bulletin 61B25-3 dated 15 January 1971 or later FAA-approved revision, or an alternate method approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region. Report results of the inspection as required by this AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
before further flight
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Affected Aircraft
Sikorsky Model S-61A, S-61D, S-61E, S-61L, S-61N, S-61NM, S-61R, S-61V helicopters certified in all categories
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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